<?php
session_start();
require_once __DIR__ . '/db/config.php';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $client_name = trim($_POST['client_name'] ?? '');
    $address = trim($_POST['address'] ?? '');
    $technician_name = trim($_POST['technician_name'] ?? '');
    $observations = trim($_POST['observations'] ?? '');
    $voltage = trim($_POST['voltage'] ?? null);
    $phase_neutral_ground = trim($_POST['phase_neutral_ground'] ?? null);
    $breaker_output = trim($_POST['breaker_output'] ?? null);

    if (empty($client_name) || empty($address) || empty($technician_name)) {
        $_SESSION['message'] = 'Please fill all required fields.';
        $_SESSION['message_type'] = 'danger';
        header('Location: index.php');
        exit;
    }

    try {
        $pdo = db();
        $stmt = $pdo->prepare(
            "INSERT INTO installations (client_name, address, technician_name, observations, voltage, phase_neutral_ground, breaker_output) VALUES (?, ?, ?, ?, ?, ?, ?)"
        );
        $stmt->execute([$client_name, $address, $technician_name, $observations, $voltage, $phase_neutral_ground, $breaker_output]);

        $_SESSION['message'] = 'Installation registered successfully!';
        $_SESSION['message_type'] = 'success';
    } catch (PDOException $e) {
        error_log("Database error: " . $e->getMessage());
        $_SESSION['message'] = 'Failed to register installation. Please try again.';
        $_SESSION['message_type'] = 'danger';
    }
}

header('Location: index.php');
exit;